What does ambidexter mean?
The definition of ambidexter
Am”bi*dex”ter, a.
Etym: [LL., fr. L. ambo both + dexter right, dextra (sc. manus) the right hand.]

Using both hands with equal ease. Smollett.

Am`bi*dex”ter, n.
1 A person who uses both hands with equal facility.
2 Hence; A double-dealer; one equally ready to act on either side in party disputes. The rest are hypocrites, ambidexters, so many turning pictures — a lion on one side, a lamb on the other. Burton.
3 (Law)
A juror who takes money from both parties for giving his verdict. Cowell.